An investigation of the performance characteristics of hybrid fillers reinforced vinyl ester composites

Abstract

Fiber reinforced polymer composites are presently employed in a wide range of advanced applications, surpassing the capabilities of metals and alloys. A number of studies have been conducted to improve the basic mechanical and thermal properties of composite materials, especially through the incorporation of sustainable, eco-friendly, recyclable, and biodegradable reinforcements. In recent years, there has been a global focus on the integration of organic nanoparticles or fillers into polymer matrices. The focus of this work lies in the superior mechanical and thermal properties demonstrated by filler-based composites when compared to other polymers. The selection of materials plays a vital role in engineering design, ensuring both economic efficiency and the effective development of a sustainable product. The tangible and intangible characteristics of the items, along with their functional attributes, play essential roles in guaranteeing consumer satisfaction. The characteristics of engineering, product design, performance, and recyclability have been given increased significance. This thesis examines the mechanical and thermal properties of vinyl ester composites enhanced with hybrid fillers, specifically Polyalthia longifolia filler combined with graphite filler, Date seed filler paired with graphite filler, and Tamarind seed filler alongside graphite filler. The composites were produced through the hand layup method, with the filler concentration ranging from 0 wt. % to 15 wt. % for biofiller and from 0 wt. % to 9 wt. % for graphite filler. An analysis has been conducted on the mechanical properties (tensile strength, flexural strength, impact strength, and hardness) and thermal properties (thermo-gravimetric analysis) of composites that incorporate polyalthia longifolia seed filler and graphite filler reinforced vinyl ester, as well as those made from date seed filler and graphite filler newline